1#ifndef _LINUX_AMIFDREG_H 2#define _LINUX_AMIFDREG_H 3 4/* 5** CIAAPRA bits (read only) 6*/ 7 8#define DSKRDY (0x1<<5) /* disk ready when low */ 9#define DSKTRACK0 (0x1<<4) /* head at track zero when low */ 10#define DSKPROT (0x1<<3) /* disk protected when low */ 11#define DSKCHANGE (0x1<<2) /* low when disk removed */ 12 13/* 14** CIAAPRB bits (read/write) 15*/ 16 17#define DSKMOTOR (0x1<<7) /* motor on when low */ 18#define DSKSEL3 (0x1<<6) /* select drive 3 when low */ 19#define DSKSEL2 (0x1<<5) /* select drive 2 when low */ 20#define DSKSEL1 (0x1<<4) /* select drive 1 when low */ 21#define DSKSEL0 (0x1<<3) /* select drive 0 when low */ 22#define DSKSIDE (0x1<<2) /* side selection: 0 = upper, 1 = lower */ 23#define DSKDIREC (0x1<<1) /* step direction: 0=in, 1=out (to trk 0) */ 24#define DSKSTEP (0x1) /* pulse low to step head 1 track */ 25 26/* 27** DSKBYTR bits (read only) 28*/ 29 30#define DSKBYT (1<<15) /* register contains valid byte when set */ 31#define DMAON (1<<14) /* disk DMA enabled */ 32#define DISKWRITE (1<<13) /* disk write bit in DSKLEN enabled */ 33#define WORDEQUAL (1<<12) /* DSKSYNC register match when true */ 34/* bits 7-0 are data */ 35 36/* 37** ADKCON/ADKCONR bits 38*/ 39 40#ifndef SETCLR 41#define ADK_SETCLR (1<<15) /* control bit */ 42#endif 43#define ADK_PRECOMP1 (1<<14) /* precompensation selection */ 44#define ADK_PRECOMP0 (1<<13) /* 00=none, 01=140ns, 10=280ns, 11=500ns */ 45#define ADK_MFMPREC (1<<12) /* 0=GCR precomp., 1=MFM precomp. */ 46#define ADK_WORDSYNC (1<<10) /* enable DSKSYNC auto DMA */ 47#define ADK_MSBSYNC (1<<9) /* when 1, enable sync on MSbit (for GCR) */ 48#define ADK_FAST (1<<8) /* bit cell: 0=2us (GCR), 1=1us (MFM) */ 49 50/* 51** DSKLEN bits 52*/ 53 54#define DSKLEN_DMAEN (1<<15) 55#define DSKLEN_WRITE (1<<14) 56 57/* 58** INTENA/INTREQ bits 59*/ 60 61#define DSKINDEX (0x1<<4) /* DSKINDEX bit */ 62 63/* 64** Misc 65*/ 66 67#define MFM_SYNC 0x4489 /* standard MFM sync value */ 68 69/* Values for FD_COMMAND */ 70#define FD_RECALIBRATE 0x07 /* move to track 0 */ 71#define FD_SEEK 0x0F /* seek track */ 72#define FD_READ 0xE6 /* read with MT, MFM, SKip deleted */ 73#define FD_WRITE 0xC5 /* write with MT, MFM */ 74#define FD_SENSEI 0x08 /* Sense Interrupt Status */ 75#define FD_SPECIFY 0x03 /* specify HUT etc */ 76#define FD_FORMAT 0x4D /* format one track */ 77#define FD_VERSION 0x10 /* get version code */ 78#define FD_CONFIGURE 0x13 /* configure FIFO operation */ 79#define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */ 80 81#endif /* _LINUX_AMIFDREG_H */ 82